[cloudcell]

Diagnosis

v0.1.0 failed Microsoft Marketplace OIDC token exchange because the existing Marketplace publisher is cloudcell, but the tagged extension declared om-core.

v0.1.1 was published before merging this PR, and its tag points to the old v0.1.0 commit (221f32aa), so the workflow failed its release-tag/version check. Do not move or rewrite published release tags.

Changes

• Change publisher to cloudcell in the extension manifest.
• Update package and lockfile to version 0.1.2 (the next unused version).
• Update the release workflow to check for cloudcell.
• Update documentation and changelog for correct Marketplace identity and release procedure.

To publish

1. Verify Trusted Publishing policy under Microsoft publisher cloudcell uses owner cloudcell, repo om-tools, workflow publish-vscode.yml, environment blank.
2. Merge this PR after required checks pass.
3. Create GitHub release v0.1.2 with target main, selecting the current post-merge main commit. Do not use v0.1.0 or v0.1.1.
4. Confirm the release-triggered GitHub Actions run succeeds, and verify https://marketplace.visualstudio.com/items?itemName=cloudcell.om-tools.

No existing tags or GitHub releases were modified.